[" If "cos pi x=x^(2)-x+(5)/(4)," the value of "],[x" will be: "]

" If "sin^(2)x+sin x cos x-6cos^(2)x=0" and "-(pi)/(2)ltxlt0," then value of "cos2x" is " -3/5 3/5 -4/5 4/5

Ifsin 2x=(2024)/(2025) where 5(pi)/(4)

If cos x=-(3)/(5) and pi

If cos x=-(sqrt(15))/(4) and (pi)/(2)

If tan x = 3/4, pi lt x lt (3pi)/(2), then the value of cos ""x/2 is

If 5 (tan ^(2) x - cos ^(2) x ) = 2 cos 2x +9 , then the value of cos 4 x is

If 5(tan^(2)x-cos^(2)x)=2cos2x+9, then the value of cos4x is

If rolle's theorem for f(x) =e^(x) (sin x-cos x) is verified on [(pi)/(4),5(pi)/(4)] , then the value of c is